Undo stacks are not granular enough for Korean

[Tyriar]

Testing #229383

Right now, typing a sentence in Korean and pressing undo will remove the entire line. I confirmed with a native Korean speaker that the ideal behavior for undo is to remove the last consonant/vowel (each character is made up of 2-4 consonants/vowels). This might be difficult to do depending on how EditContext words, but a little less better but much better than deleting the whole line is to delete the last fully formed character.

Note that this is not a regression, but it's a pretty bad existing great experience.

[anthonykim1]

I second this, there are many devs in Korea (and their tutorials) use and stick with VS Code as their editor.

From several popular tutorials I've seen there are many folks who would write code in English, but would write comment in Korean.
It feels pretty frustrating and sad to have your entire line get thrown away with one undo :/

Many folks would greatly appreciate and be happier with better support for this.

[Tyriar]

Strangely this seems to diff per platform? Undo deletes the line on macOS and the word on Windows

[aiday-mar]

I see thanks for letting me know. It would seem the current implementation using the text area also has this issue. I will investigate how we can improve this.

There is another related issue here : #229606, where sometimes after you type ni hao and select the Chinese word and then press undo, this undoes the word to ni hao and sometimes it undoes it to an empty string. This seems to happen both with and without the setting.